Table 4.
Positive Rates for sp‐ANAs According to the Different Dilutions of FANA
| Sp‐ANA | FANA dilution | ||||||
|---|---|---|---|---|---|---|---|
| 0 | 1:100 | 1:200 | 1:400 | 1:800 | ≥ 1:1600 | Total | |
| n = 330 | n = 230 | n = 110 | n = 40 | n = 93 | n = 145 | n = 948 | |
| Negative | 282 (85.5)a | 164 (71.3) | 50 (45.5) | 9 (22.5) | 14 (15.1) | 7 (4.8) | 526 (55.5) |
| Positive | 48 (14.5) | 66 (28.7) | 60 (54.5) | 31 (77.5) | 79 (84.9) | 138 (95.2) | 422 (44.5) |
| M2 | 2 (0.6) | 1 (0.4) | 0 (0.0) | 1 (2.5) | 5 (5.4) | 5 (3.4) | 14 (1.5) |
| Rib‐P | 0 (0.0) | 1 (0.4) | 1 (0.9) | 0 (0.0) | 3 (3.2) | 9 (6.2) | 14 (1.5) |
| Histone | 8 (2.4) | 8 (3.5) | 11 (10.0) | 2 (5.0) | 19 (20.4) | 35 (24.1) | 83 (8.8) |
| Nucleosome | 5 (1.5) | 2 (0.9) | 8 (7.3) | 2 (5.0) | 14 (15.1) | 36 (24.8) | 67 (7.1) |
| DsDNA | 10 (3.0) | 12 (5.2) | 10 (9.1) | 4 (10.0) | 13 (14.0) | 31 (21.4) | 80 (8.4) |
| PCNA | 0 (0.0) | 1 (0.4) | 0 (0.0) | 1 (2.5) | 0 (0.0) | 1 (0.7) | 3 (0.3) |
| CENP B | 2 (0.6) | 2 (0.9) | 4 (3.6) | 4 (10.0) | 14 (15.1) | 27 (18.6) | 53 (5.6) |
| Jo‐1 | 5 (1.5) | 1 (0.4) | 2 (1.8) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 8 (0.8) |
| PM/Scl | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Scl‐70 | 1 (0.3) | 2 (0.9) | 0 (0.0) | 4 (10.0) | 2 (2.2) | 9 (6.2) | 18 (1.9) |
| SS‐B | 3 (0.9) | 9 (3.9) | 13 (11.8) | 6 (15.0) | 25 (26.9) | 34 (23.4) | 90 (9.5) |
| Ro52 | 14 (4.2) | 28 (12.2) | 35 (31.8) | 19 (47.5) | 49 (52.7) | 77 (53.1) | 222 (23.4) |
| SS‐A | 15 (4.5) | 31 (13.5) | 42 (38.2) | 18 (45.0) | 53 (57.0) | 74 (51.0) | 233 (24.6) |
| Sm | 3 (0.9) | 5 (2.2) | 0 (0.0) | 0 (0.0) | 3 (3.2) | 16 (11.0) | 27 (2.8) |
| nRNP | 1 (0.3) | 11 (4.8) | 3 (2.7) | 3 (7.5) | 12 (12.9) | 60 (41.4) | 90 (9.5) |
a
Number (%) of samples with positive sp‐ANA results for each FANA dilution.